chore: replace personal seed data with generic demo profiles

Seeds now insert generic Demo User personas (INSERT OR IGNORE, so
existing databases keep their current profile data). Drops the
every-boot UPDATE backfills that re-asserted personal values, and
removes the personal cron env example templates in favor of the
generic scripts/jobber-cron.env.example.

.env.example

@@ -23,7 +23,7 @@ MODEL=google/gemini-3-flash-preview
 # Takes precedence over Settings → local path. PDF export still uses RxResume when enabled.
 # Example (monorepo): hand-authored v5 JSON may live under `data/resumes/` (that folder is gitignored by default).
 # If you use seeded search profiles with `resumeLocalPath` + login auto-activate, leave this unset so Settings → local path wins.
-# JOBOPS_LOCAL_RESUME_PATH=../data/resumes/ilia-dobkin.json
+# JOBOPS_LOCAL_RESUME_PATH=../data/resumes/demo-user.json
 
 # RXResume credentials for PDF generation
 # Create an account at: https://v4.rxresu.me
@@ -37,10 +37,10 @@ RXRESUME_PASSWORD=your_password_here
 # BASIC_AUTH_USER_2=
 # BASIC_AUTH_PASSWORD_2=
 # Example local pairing with DB-seeded profiles (change passwords before exposing the UI):
-# BASIC_AUTH_USER=ilia
-# BASIC_AUTH_PASSWORD=changeme-ilia
-# BASIC_AUTH_USER_2=cherepaha
-# BASIC_AUTH_PASSWORD_2=changeme-cherepaha
+# BASIC_AUTH_USER=demo
+# BASIC_AUTH_PASSWORD=changeme-demo
+# BASIC_AUTH_USER_2=demo-qa
+# BASIC_AUTH_PASSWORD_2=changeme-demo-qa
 BASIC_AUTH_USER=
 BASIC_AUTH_PASSWORD=